How do I Filter on a custom Level in log4net?

Question

I copied the log4net samples to implement a custom log level, AUDIT. I defined AUDIT to have a value of 35000, between DEBUG 30000 and INFO 40000.

The following is m

Answer 1

You will need to add

<level>
  <name value="AUDIT" />
  <value value="35000" />
</level>

in your log4net config section.

Answer 2

log4net version 1.2.10 requires that you end a LevelMatchFilter chain with a DenyAllFilter if you want the behavior I described in the question.

<appender name="FileAppender.Audit" type="log4net.Appender.FileAppender" >
  <filter type="log4net.Filter.LevelMatchFilter">
    <levelToMatch value="AUDIT" />
  </filter>
  <filter type="log4net.Filter.DenyAllFilter" />
  <file value="testrun.audit.log" />
  <layout type="log4net.Layout.PatternLayout" >
    <conversionPattern value="%date{HH:mm:ss:fff} [%thread] %-5level %logger{1} - %message%newline" />
  </layout>
</appender>